/*
 * Copyright (C) 2016 Jolla Ltd
 * Contact: Andrew den Exter <andrew.den.exter@jolla.com>
 *
 * You may use this file under the terms of the BSD license as follows:
 *
 * "Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *   * Neither the name of Nemo Mobile nor the names of its contributors
 *     may be used to endorse or promote products derived from this
 *     software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 */

#ifndef NEMODBUS_PROPERTYCHANGES_H
#define NEMODBUS_PROPERTYCHANGES_H

#include <nemo-dbus/global.h>

#include <QObject>

namespace NemoDBus {

class ConnectionData;

class NEMODBUS_EXPORT PropertyChanges : public QObject
{
    Q_OBJECT
public:
    ~PropertyChanges();

signals:
    void propertyChanged(const QString &interface, const QString &property, const QVariant &value);

private slots:
    void propertiesChanged(
            const QString &interface, const QVariantMap &changed, const QStringList &invalidated);

private:
    friend class ConnectionData;

    PropertyChanges(ConnectionData *cache, const QString &service, const QString &path);

    void addSubscriber(QObject *subscriber);
    void subscriberDestroyed(QObject *subscriber);
    void getProperty(const QString &interface, const QString &property);

    ConnectionData *const m_cache;
    QList<QObject *> m_subscribers;
    QString m_service;
    QString m_path;
};

}

#endif
